Method of treating roads to allay dust.



NITED STATES Patented November 29, 1904.

RATENT OFFICE.

METHOD OF TREATING ROADS TO ALLAY DUST- SPEGIFIGATION forming part of Letters Patent No. 775,909, dated November 29, 1904.

Application filed July 23, 1904.. Serial No. 217,890. (No specimens.)

To 01 whom. it may concern:

Be it known that I, HAROLD BENTLEY AN- DERSON, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new anduseful Improvements in Methods of Treating Roads to A'llay Dust; and I hereby declare that the following is a full, clear, and

exact description thereof, reference being had to the accompanying drawings, which form part'of this specification.

My invention'consists in 'a method of treating roads to allay dust, and has for its object to provide a method of road-su rface treatment which will eiliciently and economically render the roadpractically dustless.

l to objections, however, in that theunadulterated oil, by reason of the cohesion of its molecules, cannot be subdivided into quantities sufiiciently minute to secure proper permea tion of the dust and earth. Consequently the roads so treated are surcharged with oil in some spots and unaffected by the oil in others, and whilethe effect is to make the road seem unduly greasy the dust is not wholly laid.

My invention contemplates a method of road treatment which consists in emulsifying the oil with a suitable volatile agent-such, for instance, as water or Water and ammoniaand distributing the emulsion uponthe'road in any suitable manner, as by sprinkling. The oil in emulsion is divided into globulesmuch smaller than the oil drops obtainable by sprinkling or spraying unadulterated oil, and i a very even distribution of the oil is efliected. Good results I have found are attained by Y terant.

the use of an emulsion of fiveper cent. (5 /0) oil to ninety-five per cent. (95 )Watenthough I do not desire to limit myself to such exact proportions. After the emulsion is distributed the water and oil sink. to some extent into the ground; but the water component. finally evaporates, leaving the ground coated and permeated with a thin evenly-spread film of oil. Several treatments in the manner de scribed gives to the road a hard dustless surr face having asphalt-like qualities.

Having thus described my invention, what 5 5 I claim is I 1. A-method of treating roads which 'consists in distributing thereon a liquid comprising oil incorporated with a more volatile adul- 6 2. A method of treating-roads which consists in distributing thereon an emulsion of oil and a more volatile carrying agent.

3. A method of treating roads which consists in sprinkling on the surface thereof an 5 emulsion of oil and water.

4:. A method of treating roads which con sists in applying to theroad-surface an emul sion containing a relatively small percentage r of oil and a relatively large percentage of a more volatile carrying agent.

5. A method of treating roads which con sists in sprinkling on the surface thereof an emulsion of oil and Water wherein the amount of water is in excess of the amount ofpil.

6. A method of obtaining an oil-coated surface for'- roads which consists inf emulsifying the oil in a more volatile carrying agent'and distributing the emulsion evenly upon the surface of the road. I 30 In testimony that I claim the foregoing as my own I afiix my signature in presence of two witnesses. I

HAROLD BENTLEY Assessor.

In presence of--.

FRANK W. ROSTOCK, CHAS.'B. SHANKs. 

